Longo Baggins was Bilbo's uncle, meaning Otho was Bilbo's cousin and heir. He and his wife Lobelia Bracegirdle eagerly anticipated their inheritance: Bilbo's home at Bag End.

Otho would never inherit that smial, though, because Bilbo changed his will to make Frodo his heir. Eventually, Frodo sold Bag End to Lobelia, but Otho had died six years earlier, and never owned the home he had coveted throughout his life.

Otho and Lobellia had one child together, Lotho, who was born in S.R. 1364.